3.1 Baseline characteristics
A total of 200 patients who underwent conventional RVP (mean age 70.47 ± 12.01 years, 49.5% female) and 50 patients who underwent LBBAP (mean age 68.75 ± 14.94 years, 50.8% female) were included in this study. A comparison of baseline characteristics among the groups is summarized in Table 1.
The distribution of pacing indications was as follows: In the conventional RVP group, sick sinus syndrome was the most common indication (54.0%), followed by atrioventricular (AV) block (46.0%). In the LBBAP group, AV block was more frequent (81.5%) than sick sinus syndrome (18.5%). The QRS duration was more likely to be narrow in the conventional RVP group (62.0%) than in the LBBAP group (40.0%).